How about using an array or LED's? If the spacing is critical, you could customize a boolean LED to the size you want, then drop it in the array. You can use a 1D or 2D array if necessary. This approach will be cleaner and much easier to deal with than 50 seperate LED's.
>
"There is a God shaped vacuum in the heart of every man which cannot be filled by any created thing, but only by God, the Creator, made known through Jesus." - Blaise Pascal